13202221123220 has 12 divisors (see below), whose sum is σ = 27724664358804. Its totient is φ = 5280888449280.

The previous prime is 13202221123211. The next prime is 13202221123229. The reversal of 13202221123220 is 2232112220231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13202221123211) and next prime (13202221123229).

It can be written as a sum of positive squares in 2 ways, for example, as 1625813705476 + 11576407417744 = 1275074^2 + 3402412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13202221123229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330055528061 + ... + 330055528100.

It is an arithmetic number, because the mean of its divisors is an integer number (2310388696567).

Almost surely, 2^{13202221123220} is an apocalyptic number.

13202221123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13202221123220 is an abundant number, since it is smaller than the sum of its proper divisors (14522443235584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13202221123220 is a wasteful number, since it uses less digits than its factorization.

13202221123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660111056170 (or 660111056168 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13202221123220 its reverse (2232112220231), we get a palindrome (15434333343451).

It can be divided in two parts, 1320222 and 1123220, that added together give a palindrome (2443442).

The spelling of 13202221123220 in words is "thirteen trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred twenty".